Punching device



A. G. HENRY PUNCHING DEVICE 2 Sheets-Sheet l Filed Sept.

Dec. 3v,A 1940.

Dec. 3, 1940. v A HENRY 2,224,079

PUNCHING DEVI CE Filed Sept. l2, 1939 2 Sheets-Sheet 2 INVENTORZ @5mm/05 //EA/EY,

HIS ORNEY.

Patented Dec. 3, 1940 UNITED" STATES? This invention `relates to punches and,` par ticularly, to an improvedV punching device for punching wide strip material. f In the manufacture of continuous strip steel 5 and the like, it is usuany desirable tc test tile strip by taking-a sample therefrom. Fordvarious reathe center of the strip,'espec ally 'inu the case of wide strip tin metal, that is,y a sample is cut at 1 intervals from substantiallyfthe longitudinal center line thereof. Heretofore', these samples were'v taken from the centerof 'the'stri'p by means of handv operated punches for-the reason ,that no other type of punch could be successfully` used.

Such punches were y'not only inconvenient to use and very inecient but were also unsatisfactoryV in that they left holes in the center of theA strip` from"whi`ch 'the samples were punched having burred or ragged edges which scratched and dam;A

2O aged the rollsof the mill or the convolutionsof the strip if it were immediately coiled thereafter; In the present, invention, there is'provideda punching device which `willleave a clean hole in` the strip from which the sampleyinpunched,- thereby eliminating any danger ofthe rolls garof the metal of the stripfrom becomingscratched or damaged bysuch punching voperations. Accordingly, Ait is one of the objects ofthe pres- 30 punchingdevice which will effectively andi efiiciently punch samples vfrom the center of. 4Wide f strip material.

1t is -stilly another object of the inventionv tov4 provide an improved punohingdevicewhichis simple and convenient to operate and, at thel same time, one which will puncha"clean\hole"*in the material withA which it is used.

It is a further object of the invention topro-` 40 vide an improved punching; device" whichwillf punch holes at points spaced from the'edges 'ef extremely large metallic sheets.4

Various other objects'andadvantages 'ofuthisfw invention will become more apparentfinthe course of the following specification, and; will'be par! ticularly pointed out in the appended claims;

In the accompanyingdrawings there'is "slivrn,` for the purpose ofjillustration and description, ari

` ent inventionto'provde a simple; and'inexpensve Figure 3y is a sectional view taken on line IIIJ-LI'IofFi'gure 2, and Y l 4 is a smaller side elevational View showing improved punching `dei/ice in operation.,Y

,The punching deviceof the present invention is shown incorporated in its'use with a continuous stripjmillline as used in the manufacture of strip steel, but itwill be understood that it may begused for punching samples fromthecenter of extremev lylarge metallic sheets or for punching` holes 10 Wardly-,from the edges thereof.

A,lteferringmore particularly to the drawings, the improved punching device of my invention therein for other purposesat points 4spaced incomprises a base member 2 in the form of a longi- 15 tudinally extending plate having a channeled track or guide portion; 3 arranged in the top thereof g and extendingfthroughout the length thereof. Therefis slidablyy arranged` on top of the base memberi, a yoke or carriage member 4 sub- 20 stantiallyequal in length to the basemember 2 and havingl arbottom longitudinally extending plate-like runnerportion 5 which is positioned in the' channeled track portion 3 ofthe base mem#r ber forguiding and supporting the yoke member 25 in its;y reciprocating 'movement The vplate-like. portion Visheld in the channeled portion'vpreff erably bymea'ns of a fiat `strip or plate member E? disposed :onteach side ofthe base memberand secured thereto by means ofcap `screws 1. 30 gThere is 'arranged centrally of the yoke or 'care riagemember 4, an elongatedopening or throat S-extending from the forward 'end thereof to a point intermediate `the rear. portion thereof. On i the forward end oftheyoke member at the front'` of the opening or 'throati 8 therein; there` is arranged thereona punch 9 having'the lower or female die part IQ thereof disposed `on the forward end-of the lower portion of the yoke membei" below the throat Band the" upper `or male die 40: part12 thereof disposed on the'forwardend of the upper portion of the yoke member above the throat.l A punching'p'lunger I3 is arranged in a" suitable bearing l4,and thev upperrend thereofisi` connected to ia piston l5 disposed `in a pneumatic cylinder "I6 arranged on the forward'fend of the top'fportion of the yokejmernberll by means of whichthe punch is'adapted to beloperated.

There is mounted on the rear end of the basel plate 2 and secured thereto preferably by means of the cap screws 1, a pair of upwardly extending bracket members Il` with one disposed on eachy side of the yoke member 4 and extending thereabove. There is arranged above the yoke member l` and substantially parallel thereto an 55( soA elongated pneumatic cylinder I 8 having its .rear end disposed between the bracket members I1 and secured thereto, preferably by means of a pin I9 extending therethrough. The upper portions of the bracket members I1 are held in spaced' relation, preferably by means of a bolt 20 extending therebetween positioned between the yoke member 4 and the pneumatic cylinder I8. On the inner end of the piston rod 2I there is arranged a piston 22 within the pneumatic cylinder IBVand the outer end thereof is connected to an upwardly lextending member or bracket 23 securely mounted on the forward end of the top of the yoke member 4 adjacent the pneumatic cylinder I6.

Along one side of the base member 2 and'securely attached thereto, there is preferably arranged a pair of upwardly extending stop members 24, one adjacent the forward end thereof and the other adjacent the rear end thereof.,-

On the same side of the device on `the side ofthe yoke member or carriage 4, adjacent the rear end thereof between the stop members 24, there is mounted an outwardly extending bracket member 25 having a bolt 26 loosely and horizontally disposed in an opening therein with a coil spring 27 arranged therearound on each side of the bracket 25. There issuitably arranged on the forward end of the punch preferably a pair of arcuately-shaped guide members 28 with one arranged on the lower or female die part I of the punch and the other arranged on the upper or male die part thereof for thev purpose of guiding the strip therebetween into the throat or elongated opening 8 of the yoke or carriage member 4.

The punching device of the present invention is adapted to be securely positioned to one side of the mill line directly opposite the path of travel of the continuous strip, as shown in Figure 4 of the drawings, or in any other suitable place where it is adapted to be used and operates in the following manner. When it is desired to punch a sample from the strip, compressed air is introduced into air' cylinder I8 in back of the piston 22, thereby forcing the same together with the piston rod` 2I outwardly.` The piston 'rod 2I inl turn moves the yoke or carriage member` 4 together with the punch 9 carried thereby due to its being connected thereto by means of bracket 213 `so that the metallic strip enters between the guide members 28. and the female and male die parts of the punch 9 into the throat 8 of the yoke member 4. After the yoke member has been moved to the proper position so that the punch carried thereby 'is substantially in the center of the strip or the forward end of the bolt ZlB has struck theA stop member 24 onthe forward end of the base member, compressed air isthen.

introduced into the air cylinder I6 above the piston I` thereby forcing the same downwardly together'with the punching plunger I3 against the strip solas to cooperate with the female partI I l] therebelow to punch vthe sample from the strip. After the sample has been.. properly punched therefrom, compressed air is introduced into the air cylind'er I6 below the .pistoni I5, thereby movingthey same together withrthe punching plunger I3 upwardly out of engagement with the strip to its retracted position. Compressed air is then introduced into the air cylinder I8 in front of the piston 22 therein, thereby forcing the same together with the piston rod 2I and the yoke member 4 and' the punch 9 carried thereby rearwardly to its retracted position, as shown in Figure 2, and the rear end of the bolt 26 strikes the stop member 24 at the rear end of the base member to cushion the return movement of the carriage. 'I'he punching device is maintained in its retracted position until it is desired to again punch a sample from the strip and the operation as described `is repeated.

, of illustration and description and that various other forms may be devised within the scope of my invention, as defined by the following claims.

I claim 1. Apparatus for punching samples from continuous strip material including, in combination, a rigidly supported base member, a longitudinally extending yoke-like member reciprocably arranged on said base member for movement in a direction longitudinally of said yoke-like member transversely of thestrip material, means for guiding said yoke-like member in its movement, a fluid actuated cylinder xedly arranged parallel to said yoke-like member for actuating the same, means arranged in the outer end of said yoke-like member for punching the samples from the strip material, means for limiting the outward movement of said yoke-like member on said base member so as to position the punching means carried thereby substantially centrally of the strip material, means for limiting the inward movement of said yoke-like member, and means for actuating said punching means.

2. Apparatus for punching samples from continuous strip material including, in combination, a longitudinally extending rigidly supported base member, a longitudinally extending yoke-like member reciprocably and slidably arranged on said base member for movement in a ,direction longitudinally of said yoke-like member transversely of the strip material, means for guiding said yoke-like member in its movement, a pneumatic cylinder ixedly arranged substantially parallel to said base member and said yoke-like member for actuating the same, punching means arranged in the outer end of said yoke-like member for'punching samples from the strip material, al pneumatic cylinder for actuating said punching means, a stop member arranged on the said base member adjacent the outer end thereof, means carried by said yoke-like member which is adapted to cooperate with said stop member for limiting the outward movement of said yoke-like member so as to position thev punching means carried thereby substantially centrally of the strip material, and another stop member arranged on the base member adjacent the inner end thereof with -which said. last mentioned means carried Vby said yoke-like member is adapted to` cooperate to Vlimit the inward movement ofsaid yoke-like-member. Y 1 ALEXANDER G. HENRY.v 

